Traction-wheel.



E. EINFELDT, TR'ACUON WHEEL,

APPLICATION FlLED MMLN. lll.

E. EINFELDT. THACTiON WHEEL.

APPLICATION man MAR. 24. 1911.

LQMM; Patented Feb.1s,19l9.

' 2 SHEETSSHEET 2.

V:iti

till

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; verse cleats as OF FRENCH & HECHT,

TRACTIOCNZVVIIEZIEL.`

Application filed March 24,

To r/M wlw/ii ift may concern:

lic it known that I, EMIL EIXFELDT, torinerlyg a subject ot the Emperorof Germany. but having taken out my lirst papers ior llnitcd Statescitizensl'iip, residing at Davenport. in the county of Scott and Stateot' Iowa. have invented certain new and usei t'nl linproveinents inTraction-lVheels, of `which the tollmving is a specification, referenceheilig had therein to the accompanying drawing.

rlhis invention relates to traction wheels and has reference moreparticularly tothat type ot' wheel in which the rim is provided withtraction elements oi two forms, one in the torni of traction `cleatsextending transversely ot the rim and the other in the form ot' tractionlugs or points located between the cleats. This arrangement requiresthat the traction lugs or points be of comparativelyv great height inproportion to the area ot their bases. and consequently greatdifficult)Y is encountered in securing the lugs so tii'iiily in place onthe wheel rim as will wi'tli stand the severe strains encountered inuse. These difficulties are more pronounced in cases where a riin ot'light material is einployed. since'. hy reason of the limited bearingati'orded by the bases ot' the lugs, there is danger ot' thi` lugstearing through and riipturingl the metal.

'lifly invention aims to overcome these 'difficulties and it consists inutilizing the trans a base or supporting means for the lugs, byfastening the lugsY to the tops of the cleats. As a result of thisarrangement, the height of the cleats is added to that ot' the lugs, andconsequently the latter may be of less height than heretofore, withconsequently increased cross sectional supporting area in proportion tothe height; and further in Athe case olf' rims of thin metal, theincreased areaI of support for the lugs afforded by the cleats willprevent the lugs from tearing through or rupturing the metal.`

In the accompanying drawings:

Figure l is a side elevation of a portion of a wheel having my inventionembodied therein.

Fig. 2 is a larged scale, wheel, showi perspective face view` on an enoia portion oi the rim of the ng the saine equipped with trac- Specicationof Letters Patent.

Patented 1917. Serial No. 157,086.

tion cleats and lu invention.

Fig. 3 is a sectional elev t-a of Fig. 2.

Fig. 4L is of Fig. '3.

5 is a perspective view rig. traction Fig. Gis

a cross section lugs removed.

parts differently arranged.

is a perspective View ot' a` traction 41ig. 7 lug in Fig. S

Fig. 9 of a wheel rim and the tractlon cleats ap is a perspective v sionrim in operative relai rim.

Referring' to the draw Referring particular] designat with in v es aportion of invention the rim to at intervals, traction clea lugs (ifastened cleats. or V-sha the rim therebv and tene 11i fastened ingsides 5".

leive the besupported thereby.

The cleats are with their apices f presenting ribs The traction l in thegs in accordance with my ation on the line on the line 'tiof one oit.the

la View similar to Fig. 3 with the slightly modified form.

is a cross sectional view of the iew ot a portion an extension rim withplied to hold the exten- 4ion to the niain ings: y to Figs, l to 5, i awheel ed h v spokes 2 to a huh 3.

riin connectln accordance has applied there` ts 5, and traction to andsupported by the l preferably angular ped in cross section and areyfitted toV acing outwardly,

or ridges with slopl which ridges project outwardly ie rim and aredisposed f so as to act with a. traclli lli t3 li ugs 6 are in the formof cone shaped hich are recessed in their bases as at sloping si des ofthe cleats The lugs are fas place on the cleats and the latter to therini, by

means of stems t projecting axially from the lugs and extending throughholes 8 in th holes 9 in the rini, the inner ends against the inneholding operativ From be observed that the ceive their support nuts l0 ecleats and through lacing applied to of the stems and bearing r face ofthe rim, and thus the parts ixedly and firmly in e relations.

the constructiondescribed it will lugs from being supported thereby fromthe face of the v tive eft'w.

height. to produce f. Without making t1 rest on and rethe cleats, and atan elevation riin. the lugs are given the desired trachem unduly longtitl ttm

or slender. .As a result they will possess an 'extended supporting areaat their bases sufficient to give rm and'v rigid support withoutliability of bending or displacement. It will be further observed thatin the event of a rim of light metal being employed, the extendedsupport aorded to the lugs by the cleats, will distribute the strainsrece'ved by the lugs to the rim, and will ther 'by prevent the 'lugsfrom tearing through or rupturing the rim as Would be apt to occur ifthe lugs were fastened directly to the light rim. l

Two lugs may be applied to the cleats- 35\one\at each end as shown inFig. 3, or a single lugvmay be applied to the center of thecleat asshown'in Fig..6, the cleat and rim being provided with central holes 11and 12 for this purpose; or the lugs may be otherwise arranged on thecleats, and those on one cleat may be differently arranged relatively tothose on the other cleats according to the nature of the ground and thecharacter of the workfor which the wheel is used,

The lugs may be of an elongated form as shown in Fig. 8, or of otherforms, and the cleats-may be disposed axially of the wheel rim orangularlv` thereof as shown in Fig. 2, or in other views, the angulararrangement being preferable as it will betterkeep the Wheel clean andprevent the accumulation of dirt, trash, etc. A

For certain purposes it is desirable to employ in connection with therim of the wheel, an extension rim to form an axial continuation of themain rim and thereby increase the width of the tread surface, and inorder to fasten the extension rim in firm operative relation to `themain rim, I propose to adopt the construction shown jin Fig. 9, whereinit will be seen that the extension rim 1a is fastened to the main rim bythe traction cleats 5 arranged between the .cleats 5 and extendinglaterally'of the main rim so as to overlap and extend across the,supplemental rim. The cleats 5 are secured to the main rim by thefastening bolts v13 `and are secured to the supplemental rim by thefastening bolts 14. This construction `not only effects the connectionof the extension rim to the main rim but also prov ides tractionelements on the supplemental run.

In the foregoing description and accompanying drawings I have disclosedmy invention in the particular form and construction which I prefer toadopt, but it will be manifest that the details may be variously changedand modiied Within the skill of the mechanic, without departing from thelimits of my invention; and further it will be understood that theinvention is not limited to any particular form .or arrangement of theparts except in so far as such limitations are specified in the claim.

Having thus described my invention, what I claim is:

In a Wheel and in combination with the rim, a tractionelement thereforcomprising a V-shaped supporting member applied to the rim with its apexoutward and a traction lug recessed to receive the apex of thesupporting member and supported thereby.

In testimony whereof, I have aixed my signature in presence of twowitnesses.

EMIL EINFELDT.

Witnesses:

ANDREW NEILsoN, S. L. SAMPLE.

